Solid-liquid separation part and kitchen waste three-phase separation device thereof

Abstract

The application discloses a solid-liquid separation part and a kitchen waste three-phase separation device thereof, and belongs to the field of kitchen waste treatment. The solid-liquid separation part comprises a stirring tank, the stirring tank is internally provided with an electric heating wire, and stirring blades are installed in the stirring tank. The kitchen waste is stirred by the stirring blades, and the stirring tank can be heated to melt the solidified oil, and the oil in the solid can be fully released by stirring. A perforated plate is installed at the bottom of the stirring tank, and the perforated plate is used for filtering the liquid in the kitchen waste. The bottom of the stirring tank is sealingly assembled with a stirring base, one end of the stirring base is fixedly assembled with a base rod, the base rod and a base frame can be circumferentially rotatably assembled, the stirring base is communicated with the inlet of a liquid discharge valve through a liquid discharge pipe, the outlet of the liquid discharge valve is connected with the inlet of a liquid discharge pump through a liquid guide pipe, the outlet of the liquid discharge pump is communicated with the inlet of a corresponding gate valve, the outlet of the gate valve is communicated with a liquid inlet pipe of a corresponding oil-water separator, and the gate valve is used for controlling the opening and closing of the liquid inlet pipe and the outlet of the liquid discharge pump. The liquid discharge valve is used for controlling the opening and closing of the liquid guide pipe and the liquid discharge pipe. The stirring base is pressed by an upper pressing cylinder.

Description

Technical Field

[0001] This invention relates to kitchen waste treatment equipment, and in particular to a solid-liquid separation unit and a three-phase separation device for kitchen waste. Background Technology

[0002] Food waste mainly consists of swill and leftover food, which still has some utilization value. Currently, there are two main ways to treat food waste: one is to process it into fertilizer, and the other is to process it into animal feed. Both methods require fermentation. However, fermenting it into fertilizer is somewhat wasteful because food waste is actually a mixture of various foods, and it has the potential to be converted into animal feed, whose economic value is significantly higher than that of fertilizer. However, food waste contains a large amount of cooking oil, and this oil content will affect the fermentation effect. For example, too much cooking oil may lead to insufficient fermentation under the same fermentation process, affecting the taste and nutritional value of the feed. If the process is adjusted according to the amount of cooking oil, it may lead to over-fermentation when there is less cooking oil, which will also affect the taste and nutritional value. Therefore, the treatment process of food waste requires solid-liquid separation first, followed by oil-water separation, to obtain a three-phase raw material of solid, water, and oil. Fermentation mainly uses the solid part, while the oil can be processed into vegetable diesel as industrial crude oil, and the water can be discharged after treatment.

[0003] Currently, the main method for solid-liquid separation in the initial stage of food waste treatment is through filtration and then squeezing, followed by oil-water separation via sedimentation. This method has the following main drawbacks:

[0004] 1. No heating is applied during the processing, and some of the solidified oil will mix with the solids, greatly increasing the burden on subsequent squeezing and fermentation.

[0005] 2. Some solids contain oil, so simple filtration cannot achieve good separation. It is best to stir and mix the liquid to fully incorporate the oil before filtration, which can greatly improve the separation effect of oil and solids.

[0006] 3. After the oil and water separate by letting it stand, the liquid is usually extracted to a fixed depth using fixed parameters, and this liquid is assumed to be oil. However, in actual use, the oil content in kitchen waste can fluctuate significantly. Sometimes there is too much oil, but the fixed depth extraction method cannot effectively separate and remove the oil; other times there is too little oil, and the fixed depth extraction will cause a lot of water to mix into the oil again, affecting subsequent processing.

[0007] Therefore, how to achieve efficient separation of solids, oil and water is an urgent technical problem to be solved, but there is no similar solution in the existing technology. Summary of the Invention

[0008] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a solid-liquid separation unit and a three-phase separation device for kitchen waste, wherein the solid-liquid separation unit can achieve efficient separation of solids from water and oil mixtures.

[0009] To achieve the above objectives, the present invention provides a solid-liquid separation unit, including a stirring frame and a stirring tank. The stirring tank is mounted on the stirring frame and has a heating wire inside. When the heating wire is energized, it generates heat to heat the stirring tank and the kitchen waste inside the stirring tank. A feed pipe is installed near the top of the stirring tank.

[0010] The mixing tank is also equipped with stirring blades, which are mounted on a stirring shaft. One end of the stirring shaft is rotatably assembled with a stirring shaft seat, and the other end extends out of the mixing tank and is connected to the output shaft of a stirring motor. The stirring motor is mounted on the top of the mixing tank, and the stirring shaft seat is mounted on the bottom of the mixing tank. Two perforated plates are installed on the cover of the stirring shaft seat. The ends of the two perforated plates near the stirring shaft seat are respectively fitted onto different perforated plate shafts, and the two perforated plate shafts are rotatably assembled with the mixing tank.

[0011] The bottom of the mixing tank is sealed to the mixing seat. One end of the mixing seat is fixed to the seat rod. The seat rod and the seat frame are rotatably assembled. The mixing seat is connected to the inlet of the drain valve through a drain pipe. The outlet of the drain valve is connected to the inlet of the drain pump through a lead pipe. The outlet of the drain pump is connected to the inlet of the corresponding gate valve. The outlet of the gate valve is connected to the inlet pipe of the corresponding oil-water separator. The gate valve is used to control the opening and closing of the inlet pipe and the outlet of the drain pump. The drain valve is used to control the opening and closing of the lead pipe and the drain pipe.

[0012] When the mixing base and the mixing tank are assembled, the upper pressure cylinder is pressed against the edge of the mixing base to make the mixing base and the mixing tank press tightly and seal. The upper pressure cylinder is provided with an upper pressure cylinder notch, which is sleeved on the outside of the drain pipe.

[0013] The present invention also discloses a three-phase separation device for kitchen waste, which includes the above-mentioned solid-liquid separation section.

[0014] The beneficial effects of this invention are:

[0015] The proportional solid-liquid separation unit of this invention uses a stirred tank to achieve oil filling and separation, then uses a perforated plate to filter the liquid and discharge it, and finally discharges the solid by opening the stirring seat and the perforated plate. The entire process can be completed by only one device, thus it has a high degree of functional integration and a small size. In addition, the locking component with mechanical linkage design automatically locks and unlocks, and automatically separates and clamps the first clutch disc and the second clutch disc. It is not only simple in structure but also highly reliable. At the same time, it is also less expensive than the method of using multiple motors for independent control.

[0016] The mixing tank of this invention uses heating and stirring to fully extract oil, reducing the oil content in the solids and thus minimizing the impact on subsequent processing. Furthermore, the oil-water separation section uses an oil-water separator followed by an oil suction ring to remove the remaining oil. The separation tank can be heated to prevent oil solidification, and the two-stage oil-water separation significantly reduces the oil content in the water, thereby reducing the burden on water treatment. The oil-water separator utilizes static oil-water stratification, and then uses an oil-water interface detector to detect the oil-water interface before employing a siphon to flexibly adapt to oil layers of different depths. This ensures complete oil output and minimizes water contamination, reducing the burden on subsequent oil processing. Attached Figure Description

[0017] Figures 1-3 This is a schematic diagram of the structure of the present invention;

[0018] Figures 4-7 This is a schematic diagram of the solid-liquid separation section A;

[0019] Figures 8-10 This is a partial structural diagram of the solid-liquid separation section A;

[0020] Figure 11 This is a cross-sectional view of the solid-liquid separation section located at the center plane of the axis of the stirred tank A310;

[0021] Figure 12 yes Figure 11 Enlarged view at F1;

[0022] Figure 13 This is a structural diagram of the card lock assembly A380 and the unlocking plate A341;

[0023] Figures 14-15 This is a partial structural diagram of the solid-liquid separation section A;

[0024] Figures 16-17 This is a structural schematic diagram of the A600 external drive mechanism;

[0025] Figure 18 This is a cross-sectional view of the external drive mechanism A600 located at the center plane of the clutch tube A470 axis;

[0026] Figure 19 This is a schematic diagram of the structure at the first clutch ring A580 and the second clutch ring A590;

[0027] Figure 20 This is a cross-sectional view of oil-water separator B100 located at the center plane of the axis of separator B140;

[0028] Figure 21 yes Figure 20 Enlarged view at F2 in the middle;

[0029] Figures 22-24This is a schematic diagram of the internal structure of the oil-water separator B100;

[0030] Figure 25 This is a partial cross-sectional view of the oil-water separator B100 located at the center plane of the axis of the first oil drain pipe B181.

[0031] Figure 26 This is a structural diagram of potentiometer B302, upper float tube B550 (cut open from the center plane), and upper float B561.

[0032] Figure 27 This is a schematic diagram of the structure of the probe tube B540 (cut open from the center) and the oil-water interface detector B320.

[0033] Figures 28-29 This is a structural diagram of the oil suction device B200;

[0034] Figures 30-31 This is a schematic diagram of the internal structure of the oil suction device B200;

[0035] Figure 32 This is a cross-sectional view of the oil suction device B200 located at the center plane of the axis of the pressure roller B760;

[0036] Figure 33 This is a cross-sectional view of the oil suction device B200 located at the middle cross-section of the oil suction ring B810;

[0037] Figure 34 This is a cross-sectional view of the oil suction device B200 located at the center plane of the axis of the clamping bolt B830. Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0039] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0040] See Figures 1-3 The three-phase separation device for kitchen waste in this embodiment includes a solid-liquid separation section A and an oil-water separation section B. The solid-liquid separation section A is used to separate oil and water from solids, and the oil-water separation section B is used to separate oil and water.

[0041] See Figures 1-19The solid-liquid separation unit A includes a stirring frame A110 and a stirring tank A310. The stirring tank A310 is mounted on the stirring frame A110. A feed pipe A320 is installed near the top of the stirring tank A310. The feed pipe A320 is hollow, with one end connected to the interior of the stirring tank A310 and the other end fitted with a feed hopper A321. In use, the kitchen waste requiring solid-liquid separation is fed into the feed hopper A321, and the kitchen waste slides into the stirring tank A310 under gravity. The stirring tank contains a heating wire, which heats up when energized to heat the stirring tank and the kitchen waste inside.

[0042] The mixing tank A310 is also equipped with stirring blades A361, which are mounted on a stirring shaft A360. One end of the stirring shaft A360 is rotatably assembled with a stirring shaft seat A312, and the other end extends out of the mixing tank A310 and connects to the output shaft of a stirring motor A240. The stirring motor A240 is mounted on the top of the mixing tank A310, and the stirring shaft seat A312 is mounted on the bottom of the mixing tank A310. The stirring shaft seat A312... The cover is equipped with two perforated plates A301. The ends of the two perforated plates A301 near the stirring shaft seat A312 are respectively fitted onto different perforated plate shafts A420. The two perforated plate shafts A420 are respectively rotatably assembled with the stirring tank A310. After one end of the two perforated plate shafts A420 passes through the stirring tank A310, they are respectively assembled and fixed with different stirring gears A501. The two stirring gears A501 mesh with each other, which allows the two perforated plates A301 to open and close synchronously.

[0043] The ends of the two perforated plates A301 furthest from the stirring shaft seat A312 are locked by different locking assemblies A380, preventing the ends of the perforated plates A301 near the locking assemblies A380 from rotating towards the bottom of the mixing tank A310. This effectively maintains the position of the perforated plates A301, allowing them to effectively block solids from passing through and achieve a filtration effect. The locking assembly A380 includes a locking frame A381, a locking slider A382, and a locking block A386. The locking frame A381 is mounted on the mixing tank A310. The locking block A386 engages with, slides, and is sealed to the locking groove A318, which is located on and penetrates the mixing tank A310. The locking block A386, located inside the mixing tank A310, is pressed against the bottom surface of the orifice plate A301 to support the orifice plate A301. A locking plate A3861 is installed on the other end of the locking block A386 outside the mixing tank A310. The locking plate A3861 is axially slidably fitted onto the locking block sliding shaft A384, and is assembled with one end of the locking block pull shaft A385. One end of the locking block sliding shaft A384 is assembled with the mixing tank A310, and the other end is installed on the locking frame A381. The locking slider A382 is axially slidably mounted on the locking block slide shaft A384, and the locking slider A382 is assembled with the other end of the locking block pull shaft A385. A locking block spring A387 is installed on the locking frame A381. The locking block spring A387 is mounted on the locking block slide shaft A384, and its two ends are respectively pressed against the locking block plate A3861 and the locking frame A381 to apply a spring force pushing the locking block plate A3861 (locking block A386) into the mixing tank A310, thereby keeping the locking block A386 in place. Figure 12 The state supports the corresponding perforated plate A301. An unlocking roller A383 can also be rotatably mounted on the locking slider A382. The unlocking roller A383 can cooperate with the unlocking surface A3411 to drive the locking slider A382 away from the mixing tank A310, thereby causing the locking block A386 to exit below the perforated plate A301, allowing the perforated plate A301 to rotate downwards and open with the perforated plate shaft A420 as the center. The unlocking surface A341 is set on the unlocking plate A341, and the distance between the two ends of the unlocking surface A341 and the axis of the mixing tank A310 gradually increases. The unlocking plate A341 is mounted on the switch cylinder A340. When the switch cylinder A340 rotates, it can drive the unlocking plate A341 to rotate synchronously to the southeast, thereby realizing unlocking and locking.

[0044] The bottom of the mixing tank A310 is sealed and assembled with the mixing seat A311. One end of the mixing seat A311 is fixedly assembled with the seat rod A430. The seat rod A430 is rotatably assembled with the seat frame A313, and a seat rod worm gear A532 is mounted on the seat rod A430. The seat rod worm gear A532 meshes with the seat rod worm A531 for transmission. The seat rod worm A531 is mounted on the seat rod motor shaft A271. One end of the seat rod motor shaft A271 is inserted into the seat rod motor A270, and the seat rod motor A270 is mounted on the seat frame A313. The seat frame A313 is mounted on the mixing tank A310. After the seat rod motor A270 is started, it can drive the seat rod motor shaft A271 to rotate, thereby driving the seat rod A430 to rotate. The seat rod A430 drives the mixing seat A311 to rotate, so as to realize the assembly of the mixing seat A311 and the mixing tank A310. Figure 7 State), separation ( Figure 10 state).

[0045] Preferably, to ensure sufficient support for the stirring seat A311 when it rotates and is opened, this embodiment also includes a support plate A120 installed on the stirring frame A110, and a stirring seat edge A3111 provided on the stirring seat A311; the inner side of the support plate A120 near the stirring tank A310 is a support guide surface A121, which is an arc surface centered on the seat rod A430. The outer wall of the stirring seat A311 is close to or against the support guide surface A121, and the stirring seat edge A3111 is pressed against the support plate A120 to assist in supporting the stirring seat A311 through the support plate A120.

[0046] The stirring base A311 is connected to the inlet of the drain valve A260 via the drain pipe A261. The outlet of the drain valve A260 is connected to the inlet of the drain pump A220 via the lead pipe A221. The outlet of the drain pump A220 is connected in parallel to the inlets of three gate valves A230. The outlet of each gate valve A230 is connected to the inlet pipe B910 of the corresponding oil-water separator B100. The gate valves A230 are used to control the opening and closing of the inlet pipe B910 and the outlet of the drain pump A220. The drain valve A260 is used to control the opening and closing of the lead pipe A221 and the drain pipe A261. The drain valve A260 is mounted on the stirring frame A110. One end of the drain pipe A261 is sealed to the inlet of the drain valve A260 and is circumferentially rotatable, while the other end is connected to the bottom of the stirring base A311. It is preferable that the drain pipe A261 is a flexible telescopic spring pipe. When the stirring base A311 rotates, it carries the drain pipe A261 to rotate around the inlet of the drain valve A260, thereby reducing the impact on the drain pipe A261.

[0047] When the stirring base A311 is assembled with the stirring tank A310, it is pressed tightly onto the edge A3111 of the stirring base by the upper pressure cylinder A330 to ensure a tight seal between the stirring base A311 and the stirring tank A310. The upper pressure cylinder A330 is equipped with an upper pressure plate A331 and has an upper pressure notch A332. The upper pressure notch A332 is fitted over the drain pipe A261 to avoid interfering with it. The switch cylinder A340 is rotatably fitted onto the upper pressure cylinder A330 but cannot move axially. A switch cylinder notch A343 is provided at a position corresponding to the upper pressure cylinder notch A332. During use, the switch cylinder notch A343 and the upper pressure cylinder notch A332 are aligned to avoid interfering with the drain pipe A261.

[0048] The switch cylinder A340 is also provided with a switch cylinder gear ring A342, which can mesh with the external drive gear A562 on the external drive mechanism A600 to drive the switch cylinder A340 to rotate. When the switch cylinder A340 rotates, it can close the upper pressure cylinder notch A332 to prevent leakage when discharging solids.

[0049] A pressing block A314 is also installed on the stirring drum A310. The pressing block A314 and the pressing rod A316 are axially slidably assembled. One end of the pressing rod A316 is fitted with a pressing spring A317 and then assembled and fixed with a pressing ring A315. The pressing spring A317 applies a pushing force to the pressing ring A315 away from the pressing block A314. The top surface of the pressing ring A315 presses against the edge A3111 of the stirring seat, thereby pressing and sealing the corresponding edge A3111 of the stirring seat towards the bottom surface of the stirring tank A310. Furthermore, when the pressing ring A315 is not pressing against the corresponding edge A3111 of the stirring seat, it can provide support for the corresponding edge A3111. In use, the top surface of the upper pressure cylinder A330 presses against the pressing ring A315 and the edge A3111 of the stirring seat respectively to achieve a tight seal between the stirring seat A311 and the stirring tank A310. When the upper pressure cylinder A330 moves away from the mixing tank A310, the push ring A315 moves away from the mixing tank A310 under the action of the push spring A317, causing the clamping force of the mixing seat A311 to disappear. At this time, the mixing seat A311 can be rotated quickly. In this embodiment, the mixing seat A311 is pressed and sealed with the mixing tank A310 by the elastic sealing ring. After the pressure of the mixing seat A311 disappears, the friction of the mixing seat A311 on the elastic sealing ring when it rotates can be reduced.

[0050] The upper pressure plate A331 is fitted onto four upper pressure screws A410 and is threadedly engaged with them. The upper pressure screws A410 are rotatable but not axially movable and are mounted on the stirring frame A110. Stirring screw belts A510 pass over the four upper pressure screws A410, forming a belt drive mechanism. One of the upper pressure screws A410 is connected to the output shaft of the upper pressure motor A250 via a screw drive belt A520, forming another belt drive mechanism. The upper pressure motor A250 is mounted on the stirring frame A110. In use, the upper pressure motor A250 starts, driving the four upper pressure screws A410 to rotate synchronously. The four upper pressure screws A410 drive the upper pressure plate A331 to move axially, thus driving the upper pressure cylinder A330 to move up and down axially.

[0051] The upper pressure cylinder A330 is fitted around and sealed to the connecting pipe A350, and is axially slidable. The connecting pipe A350 is mounted on the mixing frame A110, and its other end is connected to the inlet of the squeeze dryer A210. The squeeze dryer A210 is mounted on the mixing frame A110, and its discharge port is connected to the inlet pipe A221 via the squeeze pipe A211. In use, the solids after solid-liquid separation in the mixing tank A310 enter the squeeze dryer A210, which squeezes the solids dry. The squeezed solids are then output for further processing, while the liquid is sent into the inlet pipe A221 and introduced into the oil-water separator B100 for oil-water separation. The biggest advantage of this design is that it reduces the load on the squeeze dryer, because the water and oil content of the solids after filtration in the mixing tank A310 is greatly reduced, thus achieving better squeezing effect and lower squeezing load. A screw squeeze dryer can be used in this embodiment.

[0052] See Figures 14-19 One of the perforated plate shafts A420 is equipped with a first clutch disc A421. The end face of the first clutch disc A421 is pressed against the end face of the second clutch disc A451 for transmission. When the second clutch disc A451 rotates, it can drive the first clutch disc A421 to rotate through friction, which in turn drives the two perforated plate shafts A420 to rotate synchronously in reverse. In this embodiment, rough particles can be provided on the end faces of the second clutch disc A451 and the first clutch disc A421 that are pressed against each other, thereby increasing the friction between the two to ensure the transmission effect.

[0053] The external drive mechanism A600 includes a second clutch disc A451 and an external drive frame A610. The second clutch disc A451 is mounted on one end of the clutch shaft A450. The clutch shaft A450 is fitted with a clutch spring A620 and then passes through a clutch sleeve A460 to assemble with one end of a clutch bolt A640. The other end of the clutch bolt A640 is inserted into the clutch tube hole A471 of the clutch tube A470 and is rotatably and axially slidably assembled therewith. The clutch sleeve A460 and the clutch... The coupling shaft A450 is axially sliding but not circumferentially rotatable. The clutch sleeve A460 is rotatably mounted on the outer drive frame A610, which is mounted on the stirring frame A110. A second outer drive worm gear A554 is fixed on the clutch sleeve A460, and the second outer drive worm gear A554 meshes with a second outer drive worm A553 for transmission. The second outer drive worm A553 is mounted on a second outer drive shaft A442, which is mounted on the outer drive frame A610. The second outer drive shaft A442 is assembled with an outer drive gear A562 via a one-way bearing A630. The rotation direction of the one-way bearing A630 is the same as the rotation direction of the outer drive gear A562 when it drives the switch cylinder A340 to rotate and open the upper pressure cylinder notch A332. At this time, the outer drive gear A562 cannot drive the second outer drive shaft A442 to rotate. When the switch cylinder A340 rotates to close the upper pressure cylinder notch A332, the external drive gear A562 drives the second external drive shaft A442 to rotate.The external drive gear A562 meshes with the external drive intermediate gear A561 for transmission. The external drive intermediate gear A561 is mounted on the first external drive shaft A441, which is rotatably mounted on the external drive frame A610. The first external drive shaft A441 is connected to the external drive motor shaft A281 via an external drive belt A540, forming a belt drive mechanism. One end of the external drive motor shaft A281 is inserted into the external drive motor A280. The external drive motor A280 is mounted... Mounted on the outer drive frame A610; a first outer drive worm gear A551 is provided on the outer drive motor shaft A281, the first outer drive worm gear A551 meshes with a first outer drive worm wheel A552 for transmission, the first outer drive worm wheel A552 is fixed on the third outer drive shaft A443, the third outer drive shaft A443 is rotatably mounted on the outer drive frame A610 and an eccentric wheel A570 is mounted on the third outer drive shaft A443, the eccentric wheel A570 is connected to the first connecting rod A5 One end of link 71 is eccentrically hinged (non-coaxial hinge). The other end of the first link A571 is hinged to one end of the second link A572. The other end of the second link A572 is eccentrically hinged to the first clutch ring A580. The first clutch ring A580 is rotatably mounted on the outer drive frame A610 but cannot move axially. The clutch tube A470 passes through the first clutch ring A580 and is assembled and fixed to the second clutch ring A590. The clutch tube A470 is connected to the outer drive frame A610. The frame A610 is non-rotatable but axially movable. The end faces of the first clutch ring A580 and the second clutch ring A590 that press against each other are the first clutch inclined surface A581 and the second clutch inclined surface A591, respectively. The distances between the two ends of the first clutch inclined surface A581 and the second clutch inclined surface A591 and the outer end face of the second clutch ring A590 are different, so that when the first clutch ring A580 rotates, it can drive the second clutch ring A590 to move axially. The part of the clutch bolt A640 that is inserted into the clutch tube hole A471 has a certain amount of axial displacement with respect to the clutch tube A470.

[0054] The operation process of solid-liquid separation unit A is roughly as follows:

[0055] S1, see also Figure 11 In the initial state (when in use), the stirring base A311 is assembled with the bottom of the stirring tank A310, and the upper pressure cylinder A330 presses the pressure ring A315 and the edge of the stirring base A3111 to seal the stirring base A311 and the stirring tank A310.

[0056] S2. The feed pipe A320 introduces mixed solid-liquid kitchen waste into the mixing tank A310. The heating element inside the mixing tank A310 is activated to heat the waste, melting the solidified oil within. Simultaneously, the stirring motor A240 starts, driving the stirring shaft A360 to rotate. The stirring shaft A360, through the stirring blades A361, causes the waste to tumble upwards, ensuring thorough mixing with the liquid and thus removing the oil from the waste. The mixing tank is designed with a narrow, deep shape primarily to immerse as much waste as possible in a small amount of liquid.

[0057] S3. After stirring is complete, open the drain valve A260 to allow the liquid to pass through the orifice plate A301 into the stirring seat A311, then into the inlet pipe A221, and finally into the corresponding oil-water separator B100.

[0058] S4. After the liquid is drained, start the upper pressure motor A250 to drive the upper pressure cylinder A330, which carries the switch cylinder A340, to move downwards, so that the upper pressure cylinder A330 does not affect the rotation of the drain pipe A261. At this time, the clamping force between the stirring seat A311 and the stirring tank A310 disappears.

[0059] S5. Start the seat rod motor A270, driving the stirring seat A311 to rotate away from the mixing tank A310 around the seat rod A430. The edge A311 of the stirring seat A311 presses against the support plate A120 until the stirring seat A311 rotates to... Figure 10 In this state, the drain pipe A261 does not affect the upward movement of the upper pressure cylinder A330.

[0060] S6. Start the upper pressure motor A250 to drive the upper pressure cylinder A330 to move upward to the position of pressing the mixing seat A311. The external drive motor A280 drives the third external drive shaft A443 and the first external drive shaft A441 to rotate. The first external drive shaft A441 drives the external drive gear A562 to rotate through the external drive central rotating gear A561, which in turn drives the switch cylinder A340 to rotate and close the upper pressure cylinder notch A332. At the same time, the eccentric wheel A570 drives the first clutch ring A580 to rotate, so that the first clutch ring A580 drives the second clutch ring A590 to gradually move away from the mixing tank A310 until the closed end of the clutch tube hole A471 is pressed against the large end of the clutch bolt A640. At this time, the upper pressure cylinder notch A332 is closed. 2. The sealing process is complete or about to be completed. Then, as the first clutch ring A580 continues to rotate, it drives the second clutch ring A590 to move further, causing the clutch shaft A450 to move away from the first clutch disc A421, thus separating the first clutch disc A421 and the second clutch disc A451. Before this, the unlocking plate A341, along with the rotation of the switch cylinder A340, has already pulled the locking block A386 out from under the orifice plate A301. Once the rotational damping of the first clutch disc A421 disappears, the weight inside the mixing drum, driven by gravity, causes the orifice plate A301 to rotate downwards and open, discharging the filtered solids. The solids pass through the upper pressure cylinder A330 and the connecting pipe A350 before entering the squeeze dryer A210 for squeezing. The upward movement of the upper pressure cylinder to discharge the solids is designed to prevent leakage and reduce the contact between the solids and air, thereby reducing the amount of odor emitted and lowering the pressure for subsequent deodorization.

[0061] S7. After the mixing tank A310 has discharged all solids, the external drive motor A280 is reversed, causing the switch cylinder A340 to reverse and reset, the first clutch ring A580 to reverse and reset, and the locking block A386 to reset. This causes the first clutch disc A421 and the second clutch disc A451 to return to the pressing transmission under the action of the clutch spring A620. Then, the first clutch disc A421 continues to rotate, and the first clutch disc A421 drives the two perforated plate shafts A420 to rotate synchronously in reverse, so as to drive the corresponding perforated plate A301 to rotate upward until the perforated plate A301 squeezes the corresponding locking block A386 and passes through the corresponding locking block A386 to reset. At this time, the locking block A386 returns to support the perforated plate A301.

[0062] S8. The upper pressure cylinder A330 moves down to the lowest displacement end, the stirring seat A311 reverses and resets, the upper pressure cylinder A330 moves up to the highest displacement end to restore the initial state, and then the next cycle begins.

[0063] In this embodiment, the solid-liquid separation unit A uses a stirred tank to achieve oil separation and discharge, then uses a perforated plate to filter the liquid and discharge it, and finally discharges the solid by opening the stirring seat and the perforated plate. The entire process can be completed by only one device, thus it has a high degree of functional integration and a small size. In addition, the locking component A380 with mechanical linkage design automatically locks and unlocks, and automatically separates and clamps the first clutch plate and the second clutch plate. It is not only simple in structure but also highly reliable. At the same time, it is also less expensive than the method of using multiple motors for independent control.

[0064] See Figures 1-3 , Figures 20-34 The oil-water separation unit B includes an oil-water separator B100 and an oil suction device B200. The oil-water separator B100 is used to allow the oil-water mixture to settle and separate into layers, and then output the upper layer of oil. The oil suction device B200 is used to adsorb the oil in the water output by the oil-water separator B100, so as to further reduce the oil content in the water and reduce the burden of subsequent sewage treatment.

[0065] See Figures 1-3 , Figures 20-27 The oil-water separator B100 includes a separation frame B110 and a separation tank B140. The separation tank B140 is mounted on the separation frame B110, and its interior is a hollow separation cavity B141. A support B143 is installed at the bottom of the separation cavity B141. The support B143 is rotatably assembled with one end of the separation tube B510. The other end of the separation tube B510 passes through the separation tank B140 and the separation frame B110 and is installed and sealed in an air supply connector B560. The air supply connector B560 is mounted on the separation frame B110 and is connected to an air source. Separation blades B513 are installed on the outer wall of the portion of the separation tube B510 located in the separation cavity B141. When the separation tube B510 rotates, the separation blades B513 can agitate the liquid to accelerate oil-water separation. The separator B510 has a separator hole B511 inside, and an air passage B512 is provided at one end of the separator B510 near the support B143. The air passage B512 communicates with the aeration chamber B151, which is located inside the aeration disc B150, and the top of the aeration disc B150 has several tiny aeration holes B152. In use, an air source supplies air to the separator hole B511. The gas enters the aeration chamber B151 and then exits from the aeration holes B152, forming several tiny bubbles. These bubbles float in the water, carrying impurities and oil to the surface, thus accelerating oil-water separation. The air source is connected to the top of the separator B141 to recover the gas after aeration. In this embodiment, an air pump pressurizes the air and inputs it into the air supply connector B560, then aerates the aeration disc, and finally draws in the gas from the separator B141 through the air pump inlet for circulating aeration.

[0066] One end of the separator tube B510 that extends out of the separator tank B140 is connected to the output shaft of the separator motor B311 via the separator belt B410 to form a belt drive mechanism. The separator motor B311 is mounted on the separator frame B110. After the separator motor B311 is started, it can drive the separator belt B410 to run, thereby driving the separator tube B510 to rotate, so as to drive the separator blades B513 to rotate and stir the liquid (oil-water mixture).

[0067] The top of the separation chamber B141 is connected to the inlet pipe B910 and the overflow pipe B920 respectively. The overflow pipe B920 is installed at a lower position than the inlet pipe B910 in the height direction of the separation chamber B141. The overflow pipe B920 is connected to a temporary storage tank to temporarily store the overflowing liquid. This liquid will be pumped back to the separation chamber B141 for processing later. The separation chamber B141 is located below the overflow pipe B920 and is connected to one end of the side flow channel B184. The side flow channel B184 is provided on the siphon shell B180, and the siphon shell B180 is also provided with a siphon cavity B183. The other end of the side flow channel B184 is connected to the siphon cavity B183. The two ends of the siphon cavity B183 are respectively connected to one end of the first oil drain pipe B181 and one end of the second oil drain pipe B182. The other end of the first oil drain pipe B181 is connected to the inlet of the oil drain valve B332. The outlet of the oil drain valve B332 is connected to the oil storage tank, and the oil drain valve B332 controls the opening and closing of the first oil drain pipe B181 and the oil storage tank. The other end of the second oil drain pipe B182 is inserted into the separation chamber B141, and this end of the second oil drain pipe B182 is inserted into the siphon pipe B101 and is sealed and slidably assembled therewith. The siphon pipe B101 is mounted on the siphon frame B190. One end of the siphon frame B190 passes through the separation tank B140 and the separation frame B110 and is assembled with the siphon screw plate B191. The siphon screw plate B191 is fitted on the siphon screw B520 and is assembled with it by screw thread. The two ends of the siphon screw B520 are respectively rotatably assembled with the first screw frame B120 and the separation frame B110 but cannot move axially. The first screw frame B120 is mounted on the separation frame B110, and the siphon screw B520 is connected to the output shaft of the siphon motor B312. The siphon motor B312 is mounted on the first screw frame B120. After the siphon motor B312 is started, it can drive the siphon screw B520 to rotate, thereby driving the siphon frame B190 to carry the siphon tube B101 to move along its axis to adapt to oil layers of different depths.

[0068] A ball B185 is installed inside the side flow channel B184. The ball B185 is used to control the opening and closing of the side flow channel B184. The ball B185 is assembled with the output shaft of the ball motor B340. The ball motor B340 is installed on the siphon housing B180. After the ball motor B340 is started, it can drive the ball B185 to rotate, thereby controlling the opening and closing of the side flow channel B184. Its principle is the same as that of existing electrically controlled ball valves.

[0069] The separator B140 is also equipped with a detection tube B540 and an upper float tube B550, respectively. The detection tube B540 and the upper float tube B550 have hollow detection tube holes B541 and upper float tube holes B551, respectively. A detection rod B321 of an oil-water interface detector B320 is installed inside the detection tube hole B541. One end of the detection rod B321 extends out of the detection tube B540 and is assembled with the detector B320. The oil-water interface detector B320 is mounted on a detection plate B132, which is respectively fitted onto a detection screw B530 and a detection optical axis B. On 131, the two ends of the detection screw B530 and the detection optical axis B131 are respectively mounted on the detection frame B130. The detection frame B130 is mounted on the separation frame B110. The detection screw B530 is assembled with the detection screw B530 by threaded engagement. One end of the detection screw B530 is connected to the output shaft of the detection motor B313. The detection motor B313 is mounted on the detection frame B130, and after the detection motor B313 is started, it can drive the detection screw B530 to rotate, thereby driving the oil-water interface detector B320 and the detection plate B132 to move along their axial direction.

[0070] An upper float B561 is installed inside the upper float tube hole B551. The upper float B561 is mounted on the upper float shaft B560. The upper float shaft B560 passes through the upper spacer ring B562, is fitted with an upper float spring B501, and then exits the upper float tube B550 and is assembled with a probe rod B563. The probe rod B563 is also assembled with the telescopic shaft of the potentiometer B302. The potentiometer B302 is mounted on the separator B110. The upper float B561 can float on the oil surface. The upper spacer ring B562 is mounted on the upper float shaft B560 and is axially slidably assembled with the upper float tube hole B551. The upper float spring B501 applies a spring force to the upper float shaft B560 to prevent it from moving toward the probe rod B563. In use, the upper float can be driven to rise or fall by the liquid level. During the process of the upper float rising or falling, it will drive the upper float shaft B560 to move synchronously, which will also drive the telescopic shaft of potentiometer B302 to move synchronously. At this time, the current liquid level can be determined by the signal change of potentiometer B302.

[0071] See Figures 1-3 , Figures 20-21 The bottom of the separator B140 is connected to the outlet pipe B170 through the separator pipe B142. The outlet pipe B170 is connected to the inlet of the outlet valve B331. The outlet of the outlet valve B331 is connected to the inside of the oil suction device B200 through the supply pipe B930. The outlet valve B331 is used to control the opening and closing of the outlet pipe B170 and the supply pipe B930.

[0072] The outlet pipe B170 is also connected to one end of the lower float tube B160. The lower float tube B160 has a hollow lower float tube hole B161 inside. The lower float tube hole B161 is installed vertically and its top is closed. A lower spacer ring B162 is installed inside the lower float tube hole B161. A lower float B521 is installed below the lower spacer ring B162 in the lower float tube hole B161. The lower float B521 is installed on the lower float shaft B520. One end of the float tube B160 passes through the lower spacer ring B162 and is assembled with the magnet head B522. The magnet head B522 is equipped with a head ring B5221. A lower float spring B163 is installed between the head ring B5221 and the closed end of the lower float tube hole B161. The lower float spring B163 applies a spring force to the magnet head B522 to resist its upward movement. The magnet head B522 is magnetic. The lower float tube B160 is made of non-metallic material to avoid interfering with the magnetism of the magnet head B522. The lower float B521 can float on the water surface. A magnetic control switch B301 is installed at the top of the lower float tube B160, and the signal from the magnetic control switch B301 is connected to an industrial control computer. In operation, once the liquid level in separator tube B142 is higher than the lower diaphragm ring B162, water can enter the lower float tube hole B161, causing the lower float B521 to rise. This, in turn, drives the magnetic head B522 upward. After the magnetic head B522 rises, it magnetically controls the magnetic switch B301 to close, outputting a signal. At this point, it is determined that the water in the separator tank has not been completely drained. Once the liquid level in separator tube B142 drops to near the lower float B521, the lower float B521 moves down to its lowest point or near it, the magnetic head B522 moves down to reset, the magnetic switch B301 opens, and the industrial control computer determines that the water in separator tank B140 has been completely drained. At this point, the outlet valve B331 is closed, and separator tank B140 enters the next cycle.

[0073] The general process of using the oil-water separator B100 is as follows:

[0074] S1. The liquid input from the solid-liquid separation unit A is introduced into the separation chamber B141 through the inlet pipe B910 until the potentiometer B302 detects that the liquid level has reached the preset value, at which point the liquid input is stopped. During this process, the liquid in the separation chamber B141 enters the side flow channel B184 and then enters the siphon chamber B183.

[0075] S2. Input airflow into the aeration disc to start aeration. Start the separation motor B311 to drive the separation blades B513 to rotate and stir the liquid so that the oil and water can be separated quickly. After stirring is complete, stop stirring and continue aeration for a period of time. Then let it stand for a period of time to allow the oil and water to separate.

[0076] S3. Start the detection motor B313. The detection motor B313 drives the detection screw B530 to rotate, which in turn drives the oil-water interface detector B320 to move down. The oil-water interface detector B320 detects the oil-water interface and feeds the value back to the industrial control computer. The industrial control computer uses the liquid level height detected by the potentiometer and the depth of the oil-water interface detector B320 as a reference to determine the depth of the oil layer.

[0077] S4. Start the ball motor B340 to drive the ball B185 to rotate and close the side flow channel B184; start the siphon motor B312 to drive the siphon tube B101 to move down to the oil-water interface (the displacement of the siphon tube B101 can be effectively controlled by calculating the displacement of the siphon tube B101 using the oil layer depth and the initial position of the siphon tube B101, and then controlling the rotation angle of the siphon motor B312).

[0078] S5. Open the drain valve B332. The liquid in the siphon chamber B183 enters the first drain pipe B181 for output, simultaneously generating a siphon force on the siphon pipe B101. The siphon force is used to draw in the oil layer until no liquid is output from the first drain pipe B181, at which point the oil layer output is considered complete. During this process, the upper float will move downwards, thereby detecting the output oil layer depth. If this oil layer depth is greater than the preset oil layer depth, the drain valve B332 is closed to stop the oil discharge; if this oil layer depth is less than the preset oil layer depth, the siphon pipe is driven downwards to continue discharging the oil layer.

[0079] S6. After the oil layer is drained, open the drain valve B331 until all the water in the separator is drained, then close the drain valve B331 to enter the next cycle.

[0080] See Figures 1-3 , Figures 28-34 The oil absorber B200 includes an oil-absorbing shell B210 and an oil-absorbing ring B810. The oil-absorbing shell B210 is hollow inside, and the oil-absorbing ring B810 is installed inside the oil-absorbing shell B210. Both ends of the oil-absorbing ring B810 are respectively assembled with a rotating mechanism. In use, the two rotating mechanisms carry the oil-absorbing ring B810 to rotate and continuously absorb oil from the water. The oil-absorbing ring is made of an elastic oil-absorbing material, such as an oil-absorbing sponge.

[0081] The rotating mechanism includes an inner ring B730, a pressure plate B820, an outer ring B720, and a toothed ring B710. The oil suction ring B810 is fitted over the inner ring B730, and the pressure plate B820 is pressed against the oil suction ring B810. One end of the pressure plate B820 and the clamping bolt B830 are rotatable but not axially movable. The other end of the clamping bolt B830 passes through the outer ring B720 and is screwed onto it. In use, the distance between the pressure plate B820 and the inner ring B730 can be adjusted by the clamping bolt B830, thereby clamping or releasing the oil suction ring B810.

[0082] Preferably, the toothed ring B710 is fitted over and fixed to the outer ring B720, and the outer ring B720 is fixed to the inner ring B730 (e.g., the outer ring B720 and the inner ring B730 are provided with raised rings on their sides, and screws are fixed to the two raised rings).

[0083] The gear ring B710 meshes with the outer support gear B741 for transmission. The outer support gear B741 is mounted on the outer support roller B740. Two outer support roller rings B742 are respectively provided on both sides of the outer support roller B740, and the two outer support roller rings B742 are respectively pressed against the two end faces of the gear ring B710 to support and position the gear ring B710. The outer support roller B740 is rotatably mounted on the oil suction shell B210 via the outer support roller shaft B630. The inner ring B730 is tightly assembled with the inner drag roller B750, and the inner drag roller B750 is rotatably mounted on the oil suction shell B210 via the inner drag roller shaft B640. Multiple inner drag rollers B750 and outer drag rollers B740 are distributed along the circumference of the gear ring B710 to provide support and positioning for the inner ring B730 and the gear ring B710. One of the outer support roller shafts B630 is connected to the output shaft of the rotary motor B350 and forms a belt drive mechanism. The rotary motor B350 is mounted on the oil suction shell B210.

[0084] An oil receiving shell B230 is also installed inside the oil suction shell B210. The oil receiving shell B230 has a hollow oil receiving groove B231 with an open top. An oil scraper B232 is installed inside the oil receiving groove B231. The oil scraper B232 is attached to the oil scraper roller B770. The oil scraper roller B770 is fitted on the oil scraper roller shaft B620. The oil scraper roller shaft B620 is rotatably mounted on the oil suction shell B210. The oil scraper roller B770 is tightly attached to the inner side of the oil suction ring B810. The outer side of the oil suction ring B810 corresponding to the oil scraper roller B770 is pressed against the pressure roller B760. The pressure roller B760 is fitted on the pressure roller shaft B610. The two ends of the pressure roller shaft B610 pass through the oil suction shell B210 and are rotatably assembled with the pressure roller shaft seat B220. An outer support roller B740 is fitted on the pressure roller shaft B610. When the toothed ring B710 rotates, it can drive the pressure roller shaft B610 (pressure roller B760) to rotate. The oil suction shell B210 and the pressure roller bearing B220 are respectively provided with an adjustment groove B215. The upper shaft block B212 and the lower shaft block B211 are respectively installed at the upper and lower ends of the oil suction shell B210 located in the adjustment groove B215. The upper shaft block B212 and the lower shaft block B211 are respectively assembled with the adjustment optical shaft B213. The pressure roller bearing B220 is axially slidably mounted on the adjustment optical shaft B213. An adjustment spring B214 is mounted on the part of the adjustment optical shaft B213 located between the pressure roller bearing B220 and the upper shaft block B212. The adjustment spring B214 applies a spring force to the pressure roller bearing B220 to prevent it from moving upward to the upper shaft block B212. The pressure roller bearing B220 is also provided with a bearing slider B221. The bearing slider B221 is engaged with and slidably assembled with the adjustment groove B215.

[0085] See Figure 33 The pressure roller B760 and the oil scraper roller B770 are located vertically. The pressure roller B760 presses the oil-absorbing ring B810 against the oil scraper roller B770 by its own weight, squeezing out the oil inside the oil-absorbing ring B810. The squeezed-out oil drips into the oil collecting groove B231 and is stored there, while the oil adsorbed on the oil scraper roller B770 is scraped off by the oil scraper plate B232. During the process of the pressure roller B760 squeezing the oil-absorbing ring, the pressure on the oil-absorbing ring B810 can be adjusted by sliding the pressure roller bearing B220 up and down, thereby adapting to oil-absorbing rings B810 of different thicknesses and hardnesses. The pressure roller B760 also rotates during the squeezing process, thereby providing a conveying force to the oil-absorbing ring B810 to avoid excessive pulling or blockage that could damage the oil-absorbing ring B810.

[0086] The oil receiving groove B231 is connected to the oil outlet pipe B201, and the part of the oil suction shell B210 located below the oil receiving shell B230 is connected to the water outlet pipe B202. The water outlet pipe B202 is located inside the oil suction ring B810.

[0087] Preferably, the oil-absorbing shell B210 is further equipped with two partitions B216, which respectively block the gap between the inner rings B730 and the oil-absorbing ring B810 and are in close contact with the outer wall of the oil-absorbing ring B810. This design is mainly to prevent oil from entering the inner side of the oil-absorbing ring B810 through the gap between the inner rings B730 and the oil-absorbing ring B810, thus affecting the oil adsorption effect. The liquid supply pipe B930 is connected to the outside of the oil-absorbing ring B810, and the liquid level in the oil-absorbing shell is not higher than the oil receiving shell B230 but higher than the water outlet pipe B202.

[0088] In operation, liquid enters the oil-water separator B100 from the oil suction shell B210, flows below the oil suction ring B810, and then passes through the inner side of the oil suction ring B810. During this process, oil is adsorbed onto the oil suction ring B810. The toothed ring continuously rotates the oil suction ring B810, squeezing out the adsorbed oil between the pressure roller B760 and the scraper roller B770, creating a continuous cycle. Water overflows from the water outlet pipe B202, while oil is output from the oil receiving tank B231 along the oil outlet pipe B201. This design further reduces the oil content in the water, reducing the burden on subsequent water treatment. Furthermore, when used on liquids that have already undergone oil-water separation, it significantly reduces the load on the oil suction ring B810, thus greatly improving both the oil-water separation effect and the separation efficiency.

[0089] The separator and oil suction tank can also be equipped with built-in heating wires to heat the liquid inside the separator and oil suction tank, so that the solidified oil can be liquefied and quickly discharged.

[0090] Any aspects of this invention not described in detail are well-known to those skilled in the art.

[0091] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A solid-liquid separation unit, characterized in that, It includes a mixing rack and a mixing tank, wherein the mixing tank is mounted on the mixing rack and has a built-in heating wire, and a feed pipe is installed near the top of the mixing tank. The mixing tank is also equipped with stirring blades, which are mounted on a stirring shaft. One end of the stirring shaft is rotatably assembled with a stirring shaft seat, and the other end extends out of the mixing tank and is connected to the output shaft of a stirring motor. The stirring motor is mounted on the top of the mixing tank, and the stirring shaft seat is mounted on the bottom of the mixing tank. Two perforated plates are installed on the cover of the stirring shaft seat. The ends of the two perforated plates near the stirring shaft seat are respectively fitted onto different perforated plate shafts, and the two perforated plate shafts are rotatably assembled with the mixing tank. The bottom of the mixing tank is sealed to the mixing seat. One end of the mixing seat is fixed to the seat rod. The seat rod and the seat frame are rotatably assembled. The mixing seat is connected to the inlet of the drain valve through a drain pipe. The outlet of the drain valve is connected to the inlet of the drain pump through a lead pipe. The outlet of the drain pump is connected to the inlet of the corresponding gate valve. The outlet of the gate valve is connected to the inlet pipe of the corresponding oil-water separator. The gate valve is used to control the opening and closing of the inlet pipe and the outlet of the drain pump. The drain valve is used to control the opening and closing of the lead pipe and the drain pipe. When the mixing seat and the mixing tank are assembled, the upper pressure cylinder is pressed against the edge of the mixing seat to make the mixing seat and the mixing tank press tightly and seal. Two perforated plates are locked at their ends away from the stirring shaft seat by different locking assemblies. Each locking assembly includes a locking frame, a locking slider, and a locking block. The locking frame is installed on the stirring tank. The locking block engages with, slides, and is sealed to the locking groove, which is located on and penetrates the stirring tank. One end of the locking block inside the stirring tank is pressed against the bottom surface of the perforated plate to support it. A locking plate is installed on the other end of the locking block outside the stirring tank. The locking plate is axially slidably fitted onto the locking block slide shaft, and is fitted to one end of the locking block pull shaft. One end of the locking block slide shaft is fitted to the stirring tank, and the other end is installed on the locking frame. The locking slider is axially slidably fitted onto the locking block slide shaft, and is fitted to the other end of the locking block pull shaft. A locking spring is installed on the locking frame. The locking spring is fitted onto the locking block slide shaft, and its two ends are pressed against the locking plate and the locking frame, respectively. The locking slider can also be rotatably mounted with an unlocking roller, which can cooperate with the unlocking surface to drive the locking slider away from the mixing tank, thereby driving the locking block out from under the orifice plate; the unlocking surface is set on the unlocking plate, and the distance between the two ends of the unlocking surface and the axis of the mixing tank gradually increases; the unlocking plate is mounted on the switch cylinder. The upper pressure cylinder is provided with an upper pressure cylinder notch, which is sleeved on the outside of the drain pipe; the switch cylinder is rotatably mounted on the upper pressure cylinder but cannot move axially, and the switch cylinder is provided with a switch cylinder notch corresponding to the upper pressure cylinder notch; the switch cylinder is also provided with a switch cylinder gear ring, which can mesh with the external drive gear on the external drive mechanism for transmission. After the switch cylinder rotates, it closes the upper pressure cylinder notch to prevent leakage when discharging solids; An upper pressure plate is installed on the upper pressure cylinder. The upper pressure plate is fitted onto four upper pressure screws and is screwed onto them. The upper pressure screws are rotatable but not axially movable and are installed on the stirring frame. The stirring screws pass over the four upper pressure screws respectively and form a belt drive mechanism. One of the upper pressure screws is connected to the output shaft of the upper pressure motor through a screw drive belt and forms a belt drive mechanism. The upper pressure motor is installed on the stirring frame. A worm gear is installed on the rod, and the worm gear meshes with the worm gear. The worm gear is mounted on the rod motor shaft. One end of the rod motor shaft is inserted into the rod motor, and the rod motor is mounted on a frame. The frame is mounted on the mixing tank. A support plate is installed on the stirring rack, and a stirring seat edge is provided on the stirring seat; the inner side of the support plate near the stirring tank is a support guide surface, which is an arc surface centered on the seat rod; the outer wall of the stirring seat is close to or near the support guide surface, and the edge of the stirring seat is pressed against the support plate to assist in supporting the stirring seat through the support plate; The upper pressure cylinder is fitted outside the connecting pipe and sealed to it, and can be axially slidably assembled. The connecting pipe is installed on the stirring frame and the other end of the connecting pipe is connected to the inlet of the squeeze dryer. The squeeze dryer is installed on the stirring frame and the drain port of the squeeze dryer is connected to the liquid inlet pipe through the squeeze dryer pipe. Two perforated plate shafts have one end extending out of the mixing tank and are respectively assembled and fixed with different mixing gears. The two mixing gears mesh with each other for transmission. A first clutch disc is installed on one of the perforated plate shafts. The end face of the first clutch disc is pressed against the end face of the second clutch disc for transmission. When the second clutch disc rotates, it drives the first clutch disc to rotate through friction. The external drive mechanism includes a second clutch disc and an external drive frame. The second clutch disc is mounted on one end of a clutch shaft. After a clutch spring is fitted onto the clutch shaft, it passes through a clutch sleeve and is assembled with one end of a clutch bolt. The other end of the clutch bolt is inserted into the clutch tube hole of a clutch tube and is rotatably and axially slidably assembled therewith. The clutch sleeve is axially slidably assembled with the clutch shaft but not rotatably. The clutch sleeve is rotatably mounted on the external drive frame, which is mounted on a stirring frame. A second external drive worm gear is fixed on the clutch sleeve. The second external drive worm gear meshes with a second external drive worm, which is mounted on the second external drive shaft. The second external drive shaft is mounted on the external drive frame. The second external drive shaft is assembled with an external drive gear via a one-way bearing. The rotation direction of the one-way bearing is the same as the rotation direction of the external drive gear when the external drive gear drives the switch cylinder to rotate and open the upper pressure cylinder notch. At this time, the external drive gear cannot drive the second external drive shaft to rotate. The external drive gear meshes with the external drive intermediate gear, which is mounted on the first external drive shaft. The first external drive shaft is rotatably mounted on the external drive frame and is connected to the external drive motor shaft via an external drive belt, forming a belt drive mechanism. One end of the external drive motor shaft is inserted into the external drive motor, which is mounted on the external drive frame. A first external drive worm gear is mounted on the external drive motor shaft, meshing with a first external drive worm wheel. The first external drive worm wheel is fixed on a third external drive shaft, which is rotatably mounted on the external drive frame and has an eccentric wheel mounted on it. The eccentric wheel is eccentrically hinged to one end of the first connecting rod, the other end of the first connecting rod is hinged to one end of the second connecting rod, and the other end of the second connecting rod is eccentrically hinged to the first clutch ring. The first clutch ring is rotatably mounted on the outer drive frame but cannot move axially. The clutch tube passes through the first clutch ring and is assembled and fixed to the second clutch ring. The clutch tube is assembled with the outer drive frame but cannot rotate circumferentially and can move axially. The end faces of the first clutch ring and the second clutch ring that press against each other are the first clutch inclined surface and the second clutch inclined surface, respectively. The distances between the two ends of the first clutch inclined surface and the second clutch inclined surface and the outer end face of the second clutch ring are different. The part of the clutch bolt that is inserted into the clutch tube hole is the large end, and there is a gap between the large end and the closed end of the clutch tube hole; The operation of the solid-liquid separation unit includes: S1. In the initial state, the stirring base is assembled with the bottom of the stirring tank; S2. The feed pipe inputs mixed solid and liquid kitchen waste. The kitchen waste enters the mixing tank. The electric heating wire built into the mixing tank is activated to heat the waste and melt the solidified oil in the waste. At the same time, the mixing motor is activated to drive the mixing shaft to rotate. The mixing shaft drives the waste to turn upward through the mixing blades so that the waste and liquid are fully mixed and the oil in the waste is discharged. S3. After stirring is complete, open the drain valve to allow the liquid to pass through the orifice plate into the stirring seat, then enter the liquid inlet pipe, and finally pump it into the corresponding oil-water separator. S4. After the liquid is drained, start the upper pressure motor to drive the upper pressure cylinder to move down with the switch cylinder so that the upper pressure cylinder does not affect the rotation of the drain pipe, and at this time the clamping force between the stirring base and the stirring tank disappears. S5. Start the seat rod motor to drive the stirring seat to rotate away from the mixing tank with the seat rod as the center. The edge of the stirring seat presses against the support plate until the stirring seat rotates to the preset state. At this time, the drain pipe does not affect the upward movement of the upper pressure cylinder. S6. Start the upper pressure motor to drive the upper pressure cylinder to move up to the position of pressing the mixing seat. The external drive motor drives the third external drive shaft and the first external drive shaft to rotate. The first external drive shaft drives the external drive gear to rotate through the external drive rotation gear, which in turn drives the switch cylinder to rotate to close the upper pressure cylinder notch. At the same time, the eccentric wheel drives the first clutch ring to rotate, so that the first clutch ring drives the second clutch ring to gradually move away from the mixing tank until the closed end of the clutch tube hole is pressed against the large end of the clutch bolt. At this time, the upper pressure cylinder notch has been closed or is about to be closed. Then, as the first clutch ring continues to rotate, it drives the second clutch ring to continue to move to drive the clutch shaft away from the first clutch disc, so that the first clutch disc and the second clutch disc separate. Before this, the unlocking plate has pulled the locking block out below the orifice plate as the switch cylinder rotates. Once the rotation damping of the first clutch disc disappears, the weight in the mixing tank drives the orifice plate to rotate downward to open and discharge the filtered solid. The solid passes through the upper pressure cylinder and the connecting pipe and enters the squeeze dryer for squeezing. S7. After the mixing tank has discharged all the solids, reverse the external drive motor to drive the switch cylinder to reverse and reset, the first clutch ring to reverse and reset, and the locking block to reset. This causes the first clutch disc and the second clutch disc to return to the pressing transmission under the action of the clutch spring. Then, continue to drive the first clutch disc to rotate. The first clutch disc drives the two orifice plate shafts to rotate synchronously to drive the corresponding orifice plates to rotate upward until the orifice plates squeeze the corresponding locking blocks and pass through the corresponding locking blocks to reset. At this time, the locking blocks return to the supporting orifice plates. S8. The upper pressure cylinder moves down to the lowest displacement end, the stirring seat reverses and resets, the upper pressure cylinder moves up to the highest displacement end to restore the initial state, and then the next cycle begins.

2. The solid-liquid separation unit as described in claim 1, characterized in that, The mixing tank is also equipped with a push block, which is axially slidably assembled with a push rod. One end of the push rod is fitted with a push spring and then assembled and fixed with a push ring. The push spring applies a pushing force to the push ring away from the push block. The top surface of the push ring is pressed against the edge of the mixing seat. The top surface of the upper pressure cylinder is pressed against the push ring and the edge of the mixing seat respectively, so as to achieve a tight seal between the mixing seat and the mixing tank.

3. A three-phase separation device for kitchen waste, characterized in that, The application has the solid-liquid separation unit as described in claim 1 or 2.

Images